An object with a mass of #4 kg#, temperature of #270 ^oC#, and a specific heat of #25 J/(kg*K)# is dropped into a container with #36 L # of water at #0^oC #. Does the water evaporate? If not, by how much does the water's temperature change?

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Answer 1 · 2017-08-30T11:03:10

Yes, the water evaporates.

According to principle of calorimetry,

#Q_o = Q_w#

#(mCDeltaT)_o=(mCDeltaT)_w#

#4xx25xx(270-T_f) = 36xx4.2xxT_f#

#rArr T_f ~~ 107.5^oC#

As #T_f>100^oC# , the water evaporates